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Weak Spark

Discussion in 'Motorcycle Tech Talk' started by Chuck, Apr 9, 2007.

  1. Chuck

    Chuck New Member

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    I have a 1992 Heritage, suddenly my spark is very weak, coil ohms out OK, Ignition module seems OK, What else can it be?
    Chuck, Apr 9, 2007
    #1
  3. voodoochild

    voodoochild New Member

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    Not sure myself, someone will chime in but what do the wires look like?? Both cylinders weak?
    voodoochild, Apr 9, 2007
    #2
  4. Chuck

    Chuck New Member

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    I suspect the vacum switch above carb...not really sure about what it does??
    Chuck, Apr 9, 2007
    #3
  5. chucktx

    chucktx Moderator Staff Member

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    hey chuck....welcome....glad to have ya here!!!! the first thing i would do is look in your manual....it will give a rundown on what to check for an ignition problem...you will need a voltmeter and test light. that manual is the best tool in the box. if after going through the steps outlined in the "book"...ya still have a problem ask away. there are so many things that could cause your trouble, it would take days to figure them out. but if ya go step by step and still have the problem, it will be a lot easier to give you help.....
    have fun, and let us know what ya find???
    chuck
    chucktx, Apr 10, 2007
    #4
  6. Chuck

    Chuck New Member

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    Hey thanks for the replies...I replaced the plugs and it's back to running again. They didn't look too fouled, but must have been enough. The coil was in the low range of being OK according to the manual so I'll probably change it (It's 15 years old anyhow), wires too.
    :cool:
    Chuck, Apr 12, 2007
    #5

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